Hi, I use nginx as reverse proxy to my Flask web server and have following problem:
after I changed proxy pass to variable DELETE requests started to return 405 Method not allowed (while POST works fine)


location /client_data {
resolver 127.0.0.11 valid=60s;
resolver_timeout 5s;
set $upstream_client_data web:5000;
proxy_pass http://$upstream_client_data/client_data;
}


However, everything works fine with

location /client_data {
resolver 127.0.0.11 valid=60s;
resolver_timeout 5s;
proxy_pass http://web:5000/client_data;
}


Full conf: https://gist.github.com/connormclaud/bc3d65dcb307507c0d8786a168c66b51

What did I do wrong?